1. IOR/Z/E/4/25/M256 Reference (shelfmark): IOR/Z/E/4/25/M256 Title: Madras, Post Office, Letters addressed to Messrs. Mackay and Co. sent viâ sailing boat in lieu of mail steamer or inland post Collection Area: India Office Records and Private Papers Languages: English Date Range: 1854-1855 Extent: 1 entry